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arXiv 1503.01886astro-ph.GA
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2 MFGC星表中18020个天体的目视观测

Visual Survey of 18020 Objects from the 2MFGC Catalog

S. N. Mitronova, G. G. Korotkova

摘要:

我们对18020个2 MFGC星系的红外和可见光图像进行了连续调查,这些星系是根据红外轴a/b>=3的比率从2 MASS XSC目录的164万个扩展天体中自动选择的。这项工作的目的是从扁平星系列表中排除“虚假”物体。在不同的过滤器中观察了8万多张图像后,我们能够检测到1512个这样的物体(占总数的8.4%)。我们发现23个星系在2 MASS中重复,它们有两个相应的2 MFGC编号,还有3个平坦星系,它们不包括在其他星表中,并且位于3个“假”星系附近。星等小于K_s =13等的星系球是排除天体的主要组成部分。它们显示出小的角尺寸、低的表面亮度和浓度比。这项工作的结果以2 MFGC表的形式给出,并在天文数据库VizieR,NED,HyperLeda中给出。

英文摘要:

We conducted a continuous survey of infrared and visual images of 18020 2MFGC galaxies which were selected on an automatic basis from 1.64 mln extended objects of the 2MASS XSC catalog based on the ratio of the infrared axes a/b>=3. This work aims to exclude "false" objects from the list of flat galaxies. Having observed more than 80 thousand images in different filters, we were able to detect 1512 such objects (8.4% of the total number). We found 23 galaxies duplicated in 2MASS, which have two 2MFGC numbers correspondingly, and three flat galaxies which are not included in other catalogs and are located close to three "false" galaxies. Galaxies with magnitudes fainter than K_s =13 mag compose the main part of the excluded objects. They show small angular sizes, low surface brightnesses and concentration ratios. The results of the work in the form of the 2MFGC table with notes are given in the astronomical databases VizieR, NED, HyperLeda.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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